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?arrange() or help(dplyr)These are a few of the things we personally forget to do all the time and cause 90% of our errors. They’re good first checks if R starts throwing errors or behaving strangely.
( has a corresponding closing ).\ backward slashes like Windows, check that they didn’t sneak into your expression somewhere. When in doubt use the / forward slash.> command prompt at the console you see the + character instead. That’s a good sign that either R is still thinking very-very hard, or it is still waiting for you to complete your expression. You can hit Esc or Ctrl-C to force your way back to the console and try typing your code again.ggplot we build up plots one piece at a time by adding expressions to one another with the + character. When doing this, make sure the + goes at the end of each line, and not the beginning.Put the + sign here to make ggplot happy:
ggplot(data = mpg, aes(x = displ, y = hwy)) +
geom_point()Put it on the next line to make ggplot sad:
ggplot(data = mpg, aes(x = displ, y = hwy))
+ geom_point()Not all error messages are helpful or easy to interpret, but they do seem to be getting better in many R packages. When googling an error message it can help to put the entire message in quotes. For the error below we would search for "Error in fit[5, 100, ] : subscript out of bounds".
